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(No Model.)

Y F. BURCKHRDT.

` GRAIN HULLER. No. 31?@4l Patented Mar. 17, 1885.

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y 'um .W- 0 0 Y lus UNITED STATES PATENT OFFICE,O

FREDRICHBURCKHARDT, OF ST. CHARLES, MISSOURI.

GRAIN-HULLER.

SPECIFICATION forming part of Letters Patent No. 313,984, dated March17, 1885.

Application tiled Julyv9, 1884. (No model.)

To all whom it' may concern:

Be it known that I, FREDRICH BURG/K- HARDT, of St. Charles, in thecounty of St. Charles and State of Missouri, have invented a certain newand useful Improvement in Grain-Hullers, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specification, and in which-Figure 1 is a side elevation of my huiler. Fig. 2 is a vertical sectionof the hulling portion of the same, one part of the cone being in sideview. Fig. 3 is a top View of one-half ofthe cone and shell. Fig. 4 isavertical section of theJl shell. Fig. 5 is an elevation of one oftheplates of the shell. Fig. Gis atransversc section taken on the line 6 6,Fig. 2.

This invention relates to an apparatus more particularly intended foruse in hulling corn in the manufacture of hominy, grits', die. Itrelates more particularly to an improvement on that form ot' hullershown in my application No. 148,915, filed November 16, 1884.

My improvement consists in features of novelty hereinafter fullydescribed, and pointed out in the claims.

A represents a conical form of huller provided with a shell whose innerportion has rows of tufts B, the lower part having double the number ofrows of tufts that the upper part has, for the purpose of increasing thehulling-surface- The huller-casing is preferably made in two partsprovided with perforated lugs C, and secured together by bolts D.

The huller is supported by posts II or other suitable means. The tuftsB,tl1at act to break and hullthe corn,are made of metallic brushes, asrepresented in Figs. 2, 4, and 6, and are arranged preferably in spiralform and held in place by the material from which they are made, arebent and passed through the perforated plates I of the inner portion,and are held from coming out by wires J, and from passing in by theouter portion, L, of the shell. One section or plate is shown in Fig. 5.

N are upper and lower rings to which the plates I are secured by screws0,(sce Fig. 2,) and the plates may be further connected to the outerportion by screws I). (See Fig. 6) These plates or sections arepreferably pro` vided with ribs T, as shown in Figs. 5 and 6, back ofeach upwardlyextending row of perforations. The ribs form backings tothe brushes, supporting and making them more rivid.

tII represents the cone or runner located within the shell and supportedon ashaft, U', provided with a driving-pulley, U2, and anadjusting-lever, U3, and screw Uf. The hulling-surface of this cone mayalso consist of metallic brushes made and arranged the same as ou theinner portion of the shell, or the same as shown in my applicationreferred to herein.

The apparatus is preferably provided with a feed-hopper, V, or insteadof the hopper the material could be discharged into the machine directlyfrom a spout or chute.

The casing and shell may both be secured to the rings N.

I claim as myinvention- 1. In a huller, the combination, with a cone orrunner having a hulling-surl`ace, of a shell having rows of tuftsincreasing in number toward the bottom, and consisting of metallicbrushes, substantially as and for the purpose set forth. A

2. In a huller, the combination, with a shell having a hulling-surface,of a cone 0r runner having rows of tufts increasing in number to- Wardthe bottom, and consisting of metallic brushes, substantially as and forthe purpose set forth.

3. A perforated huller-plate, I, having metallic brushes forming rows oftufts, and the ribs T, formed on said plate to provide backings orsupports for the rows of tufts, as set forth. 1

4. The combination of a cone having spiral rows of metallic tufts, and ashell having spiral rows of metallic tufts, said rows of tuftsincreasing in number' toward the bottom of both the cone and shell, asset forth.

5. The combination of a cone having ahulling-surface, and the shell, thelatter consisting of inner and outer portions, upper and lower rings,and spiral rows of tufts forming the hulling-surtce, the inner portionbeing formed of sectional ribbed plates, and the rows of tuftsincreasing in number toward the bottom, as set forth. A

FREDRICH BURCKHARDT. In presence of- GEO. H. KNIGHT, SAML. KNIGHT.

